PSLE A bag contains cards of three different colours.
17 of the cards are brown. The ratio of the number of yellow cards to that of red cards is 8 : 1. What is the ratio of the number of brown cards to that of red cards?
Brown |
Yellow |
Red |
Total |
1x3 |
6x3 |
7x3 |
|
8x2 |
1x2 |
|
3 u |
16 u |
2 u |
21 u |
The total number of red and yellow cards is the combined repeated identity.
Make the total number red and yellow cards the same.
LCM of 6 and 9 = 18
Brown : Red
3 : 2
Answer(s): 3 : 2